QT4 CG Meeting 156 Agenda 2026-03-17

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Agenda

This meeting will be hosted on Zoom at 16:00GMT (17:00CET, 12:00EDT).

Note: Daylight Saving Time began in North America on Sunday, 8 March. It does not begin in the UK and Europe until Sunday, 29 March. The QT4 CG meets on UK and European civil time. The meetings of 17 and 24 March will be one hour later in North America.

See the meeting logistics page for more details.

1. Administrivia

1.1. Roll call

1.2. Approve the agenda

1.3. Approve minutes of previous meeting

Minutes of the previous meeting.

1.4. Next meeting

This meeting is planned for 17 March 2026.

The next meeting is planned for 24 March 2026.

1.5. Review of open action items [0/13]

  • [ ] QT4CG-143-02: MK to try to recover the ability to extract formal equivalences into tests
  • [ ] QT4CG-143-03: JK to look for C14N test suites.
  • [ ] QT4CG-144-01: MK to consider if any now lost value comparisons should be added as examples.
  • [ ] QT4CG-150-01: NW to ask Jirka for a room at XML Prague for Tuesday/Wednesday
  • [ ] QT4CG-150-04: NW to see about a status update on PR #2345; possibly schedule discussion
  • [ ] QT4CG-151-01: MK to fix the typo in the build-dateTime function.
  • [ ] QT4CG-152-01: MK to add a note about the new and old syntax for names in PR #2446
  • [ ] QT4CG-153-01: MK to investigate the indentation problem.
  • [ ] QT4CG-153-02: MK to turn my suggestions on #1949 into a PR.
  • [ ] QT4CG-154-01: MK to review why anyAtomicType didn’t, in fact, become a square box!
  • [ ] QT4CG-154-02: MK to add a note about “tunneling” package parameters.
  • [ ] QT4CG-155-01: MK to add an example of function coercion that uses ?.
  • [ ] QT4CG-155-02: MK to clarify that the seconds value can be 59.9, etc. (exlusive vs. inclusive)

1.6. Review of open pull requests and issues

This section summarizes all of the issues and pull requests that need to be resolved before we can finish. See Technical Agenda below for the focus of this meeting.

1.6.1. Blocked

The following PRs are open but have merge conflicts or comments which suggest they aren’t ready for action.

  • PR #2345: 2299 Expand pipeline to allow arrow expression in path expression
  • PR #2266: 540 system-property equivalent for XQuery
  • PR #2160: 2073 data model changes for JNodes and Sequences
  • PR #2071: 77c deep update
  • PR #2019: 1776: XSLT template rules for maps and array

1.6.2. Merge without discussion

The following PRs are editorial, small, or otherwise appeared to be uncontroversial when the agenda was prepared. The chairs propose that these can be merged without discussion. If you think discussion is necessary, please say so.

  • PR #2514: 2403 Use narrative results for examples in file module
  • PR #2513: QT4CG-152-01 Add note explaining computed node constructor syntax
  • PR #2511: 2497 JNodes diagrams: selector → jkey, content → jvalue

1.6.3. Substantive PRs

The following substantive PRs were open when this agenda was prepared.

  • PR #2522: 2520 Atomic Data Types based on XSD 1.1
  • PR #2519: 2000 Define named record types for the conversion plan
  • PR #2516: 2433 JTree function: Discuss JNode identity more fully
  • PR #2515: 2475 Unification of type syntax
  • PR #2504: alternative PR#2247: Attempt at a minimalist alternative for generators.
  • PR #2470: 1310 Functions fn:regex and ?matching-substrings
  • PR #2350: 708 An alternative proposal for generators
  • PR #2313: 2298 XQFO rules: definition of default values
  • PR #2247: 716 Deferred Evaluation in XPath - the f:generator record
  • PR #2019: 1776: XSLT template rules for maps and array

1.6.4. Required for V4.0

The following issues are labeled “required for V4.0”.

  • Issue #1777: Shallow copy in XSLT with maps and arrays
  • Issue #1584: Review the XML Schema and RELAX NG schemas for XSLT 4.0 for compatibility
  • Issue #675: XSLT streaming rules for new constructs

2. Technical agenda

2.1. PR #2522: 2520 Atomic Data Types based on XSD 1.1

See PR #2522.

2.2. PR #2519: 2000 Define named record types for the conversion plan

See PR #2519.

2.3. PR #2516: 2433 JTree function: Discuss JNode identity more fully

See PR #2516.

2.4. PR #2515: 2475 Unification of type syntax

See PR #2515.

2.5. PR #2504: alternative PR#2247: Attempt at a minimalist alternative for generators.

See PR #2504.

2.6. PR #2470: 1310 Functions fn:regex and ?matching-substrings

See PR #2470.

2.7. PR #2313: 2298 XQFO rules: definition of default values

See PR #2313.

2.8. PR #2019: 1776: XSLT template rules for maps and array

See PR #2019.

3. Any other business